Watch strap



FIG. 1 is a perspective view of watch strap showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof; the left side being a mirror image is not shown;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an end elevational view thereof; and,

FIG. 6 is the other end elevational view thereof. 

The ornamental design for a "watch strap", as shown and described. 